IllegalStateException on an observable list

Martin Sladecek martin.sladecek at
Wed Oct 24 04:53:08 PDT 2012

Hi Tom,
I already filed a JIRA issue for this.


On 10/24/2012 01:37 PM, Tom Eugelink wrote:
> This indeed was the problem. Point is; I simply used code completion 
> on the Change class, found the getRemoved method, and used that. I 
> figure this will be happening to a lot of people. Maybe it is user 
> friendly to provide a small hint in the IllegalStateException's text, 
> something like "Have you maybe forgotten to iterate over the change 
> sets?".
> On 2012-10-21 22:12, Tom Eugelink wrote:
>> How blond can one be, overlooked that. Thanks.
>> Tom
>> On 2012-10-21 22:07, Martin Klähn wrote:
>>> Hi,
>>> it seems you've missed to iterate through the collected changes in 
>>> that Change. if you wrap your for-loop in while( it'll 
>>> work. you can then optionally check if the change was caused by 
>>> appointments being removed from the list or by something else. See 
>>> for reference.
>>> Martin

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